Machine Learning Engineer Intern

Internship Duration: June 8, 2026 – August 14, 2026

Qualified Students: Students graduating in Spring 2027

Our Opportunity

We are hiring amazing humans, and we hope that includes you! Advertising is a critical revenue driver in the ecommerce ecosystem, and Chewy’s Sponsored Ads team is seeking a Machine Learning Engineer Intern to help launch and scale innovative advertising solutions.

In this role, you will join the core technical team involved in crafting strategy across search and discovery, relevance and ranking, prediction, auctions, and large-scale ads systems, applying advanced machine learning and deep learning techniques, including LLMs and generative AI, to areas such as ad selection, click-through prediction, auction dynamics, keyword recommendations, campaign optimization, and performance maximization. Sponsored Ads develops a great outcome for everyone by helping pet parents find new products, brands, promotions, and price points. It allows brand owners to reach their target audience more effectively. Come be part of this impactful journey at Chewy!

What You'll Do

• You will deploy advanced algorithms and data science to simplify the shopping experience for pet parents. This will improve the reach and discovery of new Chewy vendor products and help build an ecosystem where everyone benefits.

• Directly influence and collaborate with Product and Engineering leaders to evolve solutions using applied science to improve selection, ranking, relevance, deal-offerings, click through prediction models, dynamic bidding, and auction algorithms for Chewy onsite and offsite advertising solutions

• You will lead new models from ideation to experimentation, and eventually to production delivery to improve Chewy products offerings and advance applied science applications

• Publish research papers in leading ML/AI/Advertising conferences solving problems for scale using innovative modelling

• Establish high bar on model performance, establish applied-science implementation guidelines and mentoring junior scientists

• Deploy solutions at Chewy scale improving overall customer engagement and value for Pet Parents

• Formalizing proposals and communicating verbally and in writing to Chewy Senior Leadership and business customers with varying levels of technical knowledge, educating them about our research, as well as sharing insights and recommendations

What You'll Need

• Full-time enrollment in a PhD program in Operations Research, Statistics, Applied Mathematics, Data Science or related field with an anticipated graduation date of Spring 2027

• Ability to understand and apply sophisticated mathematics and DS methodologies

• Experience in building distributed pipeline, tuning, optimizing and evaluation

• Experience with Sponsored Ads or Advertisement domain

• Experience with multiple techniques that include Predictive Models (Time Series and Regression), Linear Programming, and Classification, Search, Ranking or large-scale embeddings

• Ability to translate complex data sets and research into simple business recommendations

• Current permanent U.S. work authorization

• Availability to work 40 hours per week, Monday through Friday, for the full duration of the co-op: June 8, 2026 – August 14, 2026

Bonus

• Experience in e-commerce or retail

• Prior experience in Advertising systems a huge plus

• Experience with ML Services in AWS (SageMaker, Personalize) or equivalent

The hourly range for this role is $50.00.

The specific salary offered to a candidate may be influenced by a variety of factors including but not limited to the candidate's relevant experience, education, and work location. In addition, this position is eligible for 401k and a new hire and annual equity grant. C08+ positions may also be eligible for annual bonus.

We offer different types of insurance and benefits, such as medical/Rx, vision, dental, life, disability, hospital indemnity, critical illness, and accident. We offer parental leave, family services benefits, backup dependent care, flexible spending accounts, telemedicine, pet adoption reimbursement, employee assistance program, and many discounts including 10% off pet insurance and 20% off at Chewy.com.

Exempt salary team members have unlimited PTO, subject to manager approval. Team members will receive six paid holidays per year. Team members may be eligible for paid sick and family leave in compliance with applicable state and local regulations.